Liquid heater or cooler.



No.684,7|7. Patented Oct. l5, mun.

.1. "r; PRICE & n. T. SHARPLES.

LIQUID HEATER 0B CO0LER.'

(Application filed Mar. 81, 1900.)

(No Model.)

2 Sheets-Sheet I'.

THE Norms PETERS co. PHOYO-LITNQ, WASHINGTON, a. c

No. 684,?0. Patented Oct. I5, 190:. J. T. PRICE 8.0. T. SHARPLES.

LIQUID HEATER 0R, COOLER.

(Application filed Mar. 31, 1900.) (No Model.)

2 $heets-Sheet 2.

m5 "cams PETERS cov PHOTO-UTHIOH WASHKNGTON, mo.

UNITED STATES PATENT OFFICE.

JOSEPH T. PRICE AND DAVID T. SHARPLES, OF WESTCHESTER, PENN- SYLVANIA,ASSIGNORS TO SAID JOSEPH T. PRICE, OF SAME PLACE.

LIQUID HEATER OR COOLER.

SPECIFICATION forming part of Letters Patent No. 684,717, dated October15, 1901.

Application filed March 31, 1900. Serial No. 11,010. (No model.)

To all whom it may concern.-

Be it known that we, JOSEPH T. PRICE and DAVID T. SHARPLES, citizens ofthe United States, and residents of WVestchester, Pennsylvania, haveinvented certain Improvements in Liquid Heaters or Coolers, of which thefollowing is a specification.

The object of our invention is to construct a simple and eflectivedevice for heating or cooling liquids.

Our invention is especially adapted for heating milk to theproper'temperature for use in a separator.

In the accompanying drawings, Figure 1 is a vertical sectional View ofour improved apparatus on the line 1 1, Fig. 3. Fig. 2 is a section onthe line 2 2, Fig. 3. Fig. 8 is a sectional plan view on the line 3 3,Fig. 1. Fig. 4 is a perspective View of the inner casin g and base. Fig.5 is a view showing the method of forming the deflector. Fig. 6 is aView showing our apparatus with the outer casing open at the top, andFigs. 7 and 8 are sectional views of modified forms of the apparatus.

A is the base of the apparatus, consisting in the present instance of acasting having feet a, and cast in the base in the present instance arethe inlet and outlet passages O 0, one on each side of the apparatus. Inthe base A is an annular groove a, and secured to the inner wall of thisgroove is the casing B, made, preferably, of copper. This casing isrecessed at b b on opposite sides and directly above the inlet andoutlet openings 0 O. The recesses are made in the present in' stance bycutting out the walls of the casing and soldering curved sections to thecasing and to the base. The chamber inclosed within the casing is thusmade water and steam tight.

E is a steaminlet pipe having a suitable valve '6. The steam -pipeextends into the chamber within the casing B and has a noz- Zle 6 turnedat right angles and inclosed within a tubular casing e so that the steamwill give inotion to the body of water within the chamber.

F is an outlet-pipe extending up to one cor nor of the chamber, so thatthe overflow of water due to the condensation of the steam will pass towaste. We place the outlet at one corner, so that the device can bemounted either as shown in the drawings or secured with the base againstthe wall or other vertical support.

Surrounding the casing 13 is a second casing D, which rests upon apacking g within the annular recess ct. The outer casing D is a triflelarger than the inner casing, so that there will be a narrow space forthe passage of the milk or other fluid to be heated or cooled. Thecasing has a flange d at the base, and on the flange are slottedprojections adapted to receive bolts 1', by which the outer casing isclamped to the base. The casing has a bearing-surface at its lower side,which rests directly upon the packing, which is preferably made of cork,so that a tight fit is insured. The milk or other liquid flows into thespace between the two chambers through the inlet-passage O, and in orderto insure the thorough heating or cooling of the fluid we place barriersin the passage at each side, as shown by the plan views, Figs. 3 and 5.A grooved plate h is secured to the inner casin in the present instance,and a tongued plate t is secured to the outer casing, so that when theouter casing is placed over the inner casing these tongues enter thegrooves, and thus insure a neat fit. The fluid in its passage will flowin at the base, up one side, over the top of the inner casing, and downover the sides to the outlet-passage 0. Thus the fluid is heated orcooled evenly throughout. In heating by increasing or diminishing theamount of steam entering the chamber any desired degree of heat may beattained. In order to keep the two casings the proper distance apart, weform on the inner casing vertieal ribs or secure short pieces of wire mthereto, and in order to distribute the fluid more evenly we place abarrier 12 above the inlet-opening and also above the outlet-opening, asclearly shown in Fig. 4.

It will be understood that while our invention is especially adapted forthe purpose of heating milk to the proper temperature it may be used forheating other liquids where it is desired that they should have a giventemperature, and it may be used also for the purpose of cooling liquidsby allowing cold water to flow into the inner chamber instead of steam.

In some instances We may dispense with the top of the outer casing,shown in Fig. 6, and extend the casing considerably above the upperportion of the inner casing and leave it open at the top. In a device ofthis kind the fluid can be pumped into the casing,

and it will simply rise or fall, according to the amount of liquidpumped; but the outflow will be comparatively even. This is desirablewhere a too-large or uneven inflow comes to the heater and where theflow from the heater should be uniform.

In Fig. 7 we have shown a modification of the device, in which asteam-coil E is used to heat the liquid within the inner casing B, andinstead of forming the outlet-passages in the base and recessing theinner casing we have shown the outlet-passages C C connectcd to theouter casing D.

In Fig. 8 we have shown the device inverted and instead of thesteam-coil shown in Fig. 7 simply use a plain nozzle 6 on the end of thesteam-pipe E, and the overflow-pipef is connected to the top of theapparatus. The apparatus can be mounted as shown in Fig. l, or inverted,as shown in Fig. 8, or placed inany position, accordingto the use forwhich it is intended.

It will be seen by the above description that a large body of water canbe used for heating or cooling in order to preserve an even temperaturein the cooler and that a perfect circulation of the fluid to be heatedor cooled is gained by the construction shown and that the material tobe cooled is between the water and the atmosphere,and consequently amore even temperature of the water is maintained, and by circulating theliquid to be heated or cooled over the inner chamber the temperature ofthe material can be readily ascertained by hand at any point of thecasing. Furthermore, by the construction shown in Figs. 1 to 4., all thepipes-are coupled to the stationary part of the apparatus, so that allthat is necessary in cleansing is to remove the outer casing withoutdetaching any of the pipes.

We have alluded in'the specification and claims to the portion A as thebase; but it will be understood that it may be simply a flanged plate,as in Fig. 8, and the device may be used either as shown in Figs. 1, 6,and 7 or inverted, as shown in Fig. 8.

We claim as our invention 1. In an apparatus for heating or coolingfluids, the combination of'a closed inner casing, an outer casing alsoclosed, having its external surface exposed to the atmosphere andforming with the said inner casing, a passage not communicating with theinner casing for the liquid to be heated or cooled, an inlet and outletfor said passage, the said inner casing being constructed to contain afluid for varying the temperature thereof and having an inlet and outletwhereby said fluid may be admitted and drawn off, substantially asdescribed.

2. The combination of a closed inner casing, an outer casing also closedsurrounding the same and forming with it a passage for the liquid to beheated or cooled, said passage having an inlet and an outlet and notcomin unicating with the interior of the inner casing, an inlet andoutlet for the inner casing and means for heating or cooling the same,and partitions between the casings construct ed to cause circulation ofthe liquid to be heated or cooled while said liquid is flowing from theinlet to the outlet, substantially as described.

3. The combination of the base, an inner casing secured to the base,inlet and outlet recesses at each side, inlet and outlet passagescommunicating with the said recessed portion of the casing, and an outercasing forming with the inner casing a passage for the liquid to beheated, substantially as described.

4. The combination of the base, an inner casing secured to the base, anouter casing,

means for securing the outer casing to the base, packing between theouter casing and the base, inlet and outlet passages leading to thespace between the casings, an overflow-pipe openinginto the innerchamber, and an inlet-pipe also within the chamber, sub stantially asand for the purpose set forth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

JOSEPH T. PRICE. DAVID T. SHARPLES. Witnesses:

J os. T. MURTAGH, ALAWILDA HAINEs.

